CN204669115U - Rotor and there is its motor - Google Patents
Rotor and there is its motor Download PDFInfo
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- CN204669115U CN204669115U CN201520388336.XU CN201520388336U CN204669115U CN 204669115 U CN204669115 U CN 204669115U CN 201520388336 U CN201520388336 U CN 201520388336U CN 204669115 U CN204669115 U CN 204669115U
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- permanent magnet
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- rotor
- rotor core
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Abstract
The utility model discloses a kind of rotor, comprise rotor core and multiple set of permanent magnets, what be the center of circle in the inside of rotor core with the axle center of rotor core is circumferentially evenly provided with multiple permanent magnet trough, and the quantity of permanent magnet trough is identical with the quantity of set of permanent magnets; A set of permanent magnets is arranged in a permanent magnet trough, each set of permanent magnets comprises the end permanent magnet of the box-shaped structure at the two ends being arranged on corresponding permanent magnet trough, and has the first angle α between the normal of the side of the close magnetic flux path of the direction of magnetization of this end permanent magnet and this end permanent magnet.The utility model also discloses a kind of motor with above-mentioned rotor.Above-mentioned rotor and above-mentioned motor have higher anti-demagnetization capability.
Description
Technical field
The utility model relates to machine field, particularly relates to a kind of rotor and has its motor.
Background technology
In prior art, usually rotor is designed to U-shaped structure or V-structure, to improve the Driving Torque ability of magneto.But magnetic resistance is little near the both ends of permanent magnet, permanent magnet both ends are easily concentrated the counter magnetic field of the coil effect of stator, and serious demagnetize appears in permanent magnet both ends, thus the Driving Torque of magneto is reduced, even make motor normally to work.
And in the prior art, the magnetic potential of demagnetizing field acts on magnet steel perpendicular to magnet steel trough rim circle, demagnetization magnetic potential will just to the direction of magnetization of magnet steel, and therefore demagnetizing field all will act on magnet steel, causes strong demagnetization.
Utility model content
Based on this, be necessary to provide a kind of rotor that can improve anti-demagnetization capability.
A kind of rotor, comprises rotor core and multiple set of permanent magnets; What be the center of circle in the inside of described rotor core with the axle center of described rotor core is circumferentially evenly provided with multiple permanent magnet trough, and the quantity of described permanent magnet trough is identical with the quantity of described set of permanent magnets;
A described set of permanent magnets is arranged in a described permanent magnet trough, and each described set of permanent magnets comprises the end permanent magnet of the box-shaped structure at the two ends being arranged on corresponding described permanent magnet trough, and between the normal of the side of magnetic flux path on the close described rotor core of the direction of magnetization of described end permanent magnet and described end permanent magnet, there is the first angle α.
Wherein in an embodiment, described end permanent magnet is inclined in described permanent magnet trough, and described end permanent magnet has the second angle β near the side of described magnetic flux path and described permanent magnet trough between the sidewall of described magnetic flux path.
Wherein in an embodiment, the span of described second angle β is: 3 °≤β≤(120/6p) °;
Wherein, p is the number of pole-pairs of described rotor.
Wherein in an embodiment, described permanent magnet trough is U-shaped structure, and described permanent magnet trough comprises first point of groove of arranging successively, second point of groove and the 3rd point of groove, and the structure of described first point of groove is identical with the structure of described 3rd point of groove;
Described set of permanent magnets comprises the first permanent magnet be arranged in described first point of groove, is arranged on the second permanent magnet in described second point of groove and is arranged on the 3rd permanent magnet in described 3rd point of groove;
Described first permanent magnet and described 3rd permanent magnet are end permanent magnet.
Wherein in an embodiment, described first point of groove and described 3rd point of groove are D type structure, and the second arc structure part of the first arc structure part of described first point of groove and described second point of groove is all towards described magnetic flux path.
Wherein in an embodiment, the arc top of the first arc structure part of described first point of groove to described first arc structure part two-end-point between the vertical range of line that forms be the first length m, the distance between adjacent two described permanent magnet trough is the second length n;
Following relation is met: 0.6<m/n<1.2 between described first length m and described second length n.
Wherein in an embodiment, described first point of groove comprises near first segmentation in axle center of described rotor core and the second segmentation with described first connection segment;
Described first is segmented into square structure, described second segmentation gradually become large along the radial direction of described rotor core towards the direction outside circle perpendicular to the width on the direction of described rotor core radial direction, and described first segmentation away from the sidewall of described magnetic flux path and described second segmentation in the same plane away from the sidewall of described magnetic flux path.
Wherein in an embodiment, described permanent magnet trough is V-structure, described permanent magnet trough comprises the 4th point of groove and the 5th point of groove, and described set of permanent magnets comprises the 4th permanent magnet be arranged in described 4th point of groove and the 5th permanent magnet be arranged in described 5th point of groove.
Wherein in an embodiment, described permanent magnet trough also comprises the 6th point of groove, and the two ends of described 6th point of groove are connected near the one end in described rotor core axle center near the one end in described rotor core axle center and described 5th point of groove with described 4th point of groove respectively.
Wherein in an embodiment, the span of described first angle α is: 10 °≤α≤(180/2p) °;
Wherein, p is the number of pole-pairs of described rotor.
The utility model also proposes a kind of motor, comprises above-mentioned rotor.
Above-mentioned rotor, comprise rotor core and multiple set of permanent magnets, the permanent magnet trough be circumferentially evenly provided with for placing set of permanent magnets that rotor core inside is the center of circle with the axle center of rotor core, the normal being arranged on the side of the direction of magnetization of the end permanent magnet of the box-shaped structure at the two ends of permanent magnet trough and the close magnetic flux path of this end permanent magnet of each set of permanent magnets has the first angle α, thus make to cause the magnetic potential of this end permanent magnet demagnetization to be only the one-component of demagnetizing field magnetic potential, thus improve anti-demagnetization capability.Above-mentioned motor comprises above-mentioned rotor, therefore, it is possible to improve anti-demagnetization capability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model rotor embodiment one;
Fig. 2 is the schematic diagram that the set of permanent magnets of the utility model rotor in embodiment one is assembled in permanent magnet trough;
Fig. 3 is the close distribution map of demagnetization magnetic of prior art rotor;
Fig. 4 is the close distribution map of demagnetization magnetic of the utility model rotor;
Fig. 5 is the structural representation of the utility model rotor embodiment two;
Fig. 6 is the structural representation of the utility model rotor embodiment three;
Fig. 7 is the structural representation of the utility model rotor embodiment four;
Fig. 8 is the structural representation of the utility model rotor embodiment five;
Fig. 9 is the structural representation of the utility model rotor embodiment six.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, be described below in conjunction with the embodiment of accompanying drawing to the utility model rotor and the motor with it.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1 and Fig. 2, in an embodiment, the utility model rotor comprises rotor core 100 and multiple set of permanent magnets 200.What be the center of circle in the inside of rotor core 100 with the axle center of rotor core 100 is circumferentially evenly provided with multiple permanent magnet trough 110.The quantity of permanent magnet trough 110 is identical with the quantity of set of permanent magnets 200.A set of permanent magnets 200 is arranged in a permanent magnet trough 110.Each set of permanent magnets 200 comprises the end permanent magnet of the box-shaped structure at the two ends being arranged on corresponding permanent magnet trough 110.And the normal of the side of the close magnetic flux path 300 of the direction of magnetization of this end permanent magnet and this end permanent magnet has the first angle α.Wherein, shown in the arrow in Fig. 1, direction is the direction of magnetization of this end permanent magnet.
Understandable, when the line of magnetic induction enters non-ferromagnetic material by ferromagnetics, or when entering ferromagnetics by non-ferromagnetic material, no matter what angle the line of magnetic induction becomes with interfacial normal in ferromagnetics, it be close to can think with interface in interfacial non-ferromagnetic material perpendicular.Therefore, the direction of magnetization of the magnetic potential of demagnetizing field and this end permanent magnet is provided with the first angle by rotor of the present utility model, thus make to cause the magnetic potential of this end permanent magnet demagnetization to be only the one-component of demagnetizing field magnetic potential, be equivalent to the demagnetizing field causing these end permanent magnet demagnetization needs relatively larger, thus improve the anti-demagnetization capability of rotor.
See Fig. 3 and Fig. 4, and with direction shown in Fig. 3 and Fig. 4 for benchmark, the upper left corner of this end permanent magnet and the black region at lower right position place are the more region of demagnetization.After adopting rotor of the present utility model, the upper left corner of this end permanent magnet and the more region of the demagnetization in the lower right corner are obviously reduced.Through test determination, do not adopt the demagnetization current of the motor of the utility model rotor to be 25A, adopt the demagnetization current of the motor of the utility model rotor to bring up to 32A, demagnetization current improves 28%.
See Fig. 1 and Fig. 2, in embodiment one, permanent magnet trough 110 is U-shaped structure, comprises first point of groove, 111, second point of groove 112 and the 3rd point of groove 113 of arranging successively.Wherein, the structure of first point of groove 111 is identical with the structure of the 3rd point of groove 113, is square structure; Second point of groove 112 is arc structure.First point of groove of arranging successively, 111, second point of groove 112 and the 3rd point of groove 113 form a U-shaped structure.The opening of this U-shaped structure is towards the outside of rotor core 100.
Corresponding set of permanent magnets 200 comprises the first permanent magnet 210, second permanent magnet 220 and the 3rd permanent magnet 230.First permanent magnet 210 is arranged in first point of groove 111, and the second permanent magnet 220 is arranged in second point of groove 112, and the 3rd permanent magnet 230 is arranged in the 3rd point of groove 113.Understandable, the structure of the first permanent magnet 210 is the box-shaped structure matched with the structure of first point of groove 111, the structure of the 3rd permanent magnet 230 is the box-shaped structure matched with the structure of the 3rd point of groove 113, and the structure of the first permanent magnet 210 is identical with the structure of the 3rd permanent magnet 230, is end permanent magnet.The structure of the second permanent magnet 220 is the box-shaped structure matched with second point of groove 112.In the present embodiment, the first permanent magnet 210, second permanent magnet 220 and the 3rd permanent magnet 230 separate.The structure of above-mentioned permanent magnet trough 110 and the structure of set of permanent magnets 200, be convenient to the complexity reducing manufacture craft, and be convenient to the assembling of rotor.
The direction of magnetization and first permanent magnet 210 of the first permanent magnet 210 have the first angle α between the normal of the side of magnetic flux path 300.In like manner, the direction of magnetization of the 3rd permanent magnet 230 and the 3rd permanent magnet 230 have the first angle α between the normal of the side of magnetic flux path 300.
See Fig. 5, in embodiment two, the first permanent magnet 210 is inclined in first point of groove 111, and the first permanent magnet 210 has the second angle β near the side of magnetic flux path 300 and first point of groove 111 between the sidewall of magnetic flux path 300.Preferably, the span of the second angle β can be: 3 °≤β≤(120/6p) °, wherein p is the number of pole-pairs of the utility model rotor.Can step-like structure being provided with in first point of groove 111, by being placed on this step-like structure one end of the first permanent magnet 210, the first permanent magnet 210 being inclined in first point of groove 111.
In like manner, the 3rd permanent magnet 230 can also be inclined in the 3rd point of groove 113, and the 3rd permanent magnet 230 has the second angle β near the side of magnetic flux path 300 and the 3rd point of groove 113 between the sidewall of magnetic flux path 300.Preferably, the span of the second angle β can be: 3 °≤β≤(120/6p) °, wherein p is the number of pole-pairs of the utility model rotor.Can step-like structure being provided with in 3rd point of groove 113, by being placed on this step-like structure one end of the 3rd permanent magnet 230, the 3rd permanent magnet 230 being inclined in the 3rd point of groove 113.
First permanent magnet 210 is inclined in first point of groove 111, the 3rd permanent magnet 230 is inclined in the 3rd point of groove 113, the direction of magnetization of the prior art can not be changed like this, the anti-demagnetization capability of the utility model rotor can be improved.In the span of the second angle beta, the anti-demagnetization effectiveness of the utility model rotor is better.
See Fig. 6, in embodiment three, first point of groove 111 is D type structure, comprises the first arc structure part 111a and the first projected square part 111b.First arc structure part 111a of first point of groove 111 is towards magnetic flux path 300.3rd point of groove 113 can also be D type structure, comprises the second arc structure part 113a and the second projected square part 113b.Second arc structure part 113a of the 3rd point of groove 113 is towards magnetic flux path 300.And the structure of first point of groove 111 is identical with the structure of the 3rd point of groove 113.First point of groove 111 and the 3rd point of groove 113 are set to D type structure, the anti-demagnetization effectiveness of the utility model rotor can be made better.
Wherein, the arc top of the first arc structure part 111a of first point of groove 111 to the first arc structure part 111a two-end-point between the vertical range of line that forms be the first length m, distance between two adjacent permanent magnet trough 110 is the second length n, as shown in Figure 6.Preferably, following relation is met between the first length m and the second length n: 0.6<m/n<1.2.When the first length m and the second length n meets this relational expression, the more demagnetization area of demagnetization on the first permanent magnet 111 of the utility model rotor and the 3rd permanent magnet 113 will reduce further.
Understandable, the arc top of the second arc structure part 113a of the 3rd point of groove 113 to the second arc structure part 113a two-end-point between the vertical range of line that forms also be the first length m.
See Fig. 7, in embodiment four, the second segmentation 111c that first point of groove 111 comprises the first segmentation 111d near the axle center of rotor core 100 and be connected with the first segmentation 111d.First segmentation 111d is square structure.Second segmentation 111c gradually becomes large along the radial direction of rotor core 100 towards the direction outside circle perpendicular to the width on the direction of rotor core 100 radial direction.And the first segmentation 111d away from the sidewall of magnetic flux path 300 and the second segmentation 111c in the same plane away from the sidewall of magnetic flux path 300.
In like manner, the 3rd point of groove 113 the 4th segmentation 113c of comprising the 3rd segmentation 113d near the axle center of rotor core 100 and being connected with the 3rd segmentation 113d.3rd segmentation 113d is square structure.4th segmentation 113c gradually becomes large along the radial direction of rotor core 100 towards the direction outside circle perpendicular to the width on the direction of rotor core 100 radial direction.And the 3rd segmentation 113d away from the sidewall of magnetic flux path 300 and the 4th segmentation 113c in the same plane away from the sidewall of magnetic flux path 300.
Understandable, in rotor, the magnetic resistance of set of permanent magnets 200 is far longer than the magnetic resistance of non-permanent magnet part.Therefore, when demagnetization occurs rotor, demagnetization magnetic flux can pass through along the path that magnetic resistance is minimum, thus causes set of permanent magnets 200 comparatively serious near the part demagnetization of rotor core 100 cylindrical.In the present embodiment, set of permanent magnets 200 is the first permanent magnet 210 and the 3rd permanent magnet 230 near the part of rotor core 100 cylindrical.And the second segmentation 111c can weaken the magnetic field of the maximum demagnetization magnetic potential that the first permanent magnet 210 bears, 4th segmentation 113c can weaken the magnetic field of the maximum demagnetization magnetic potential that the 3rd permanent magnet 230 bears, thus improves the anti-demagnetization capability of the utility model rotor.
See Fig. 8, in embodiment five, permanent magnet trough 110 can also be V-structure.Permanent magnet trough 110 comprises the 4th point of groove 114 and the 5th point of groove 115.Corresponding, set of permanent magnets 200 comprises the 4th permanent magnet 240 be arranged in the 4th point of groove 114 and the 5th permanent magnet 250 be arranged in the 5th point of groove 115.4th permanent magnet 240 and the 5th permanent magnet 250 are box-shaped structure.Permanent magnet trough 110 is arranged to V-structure, the consumption of permanent magnet can be reduced, reduce the complexity of manufacture craft, thus reduce cost of manufacture.
See Fig. 9, in embodiment six, the permanent magnet trough 110 of this V-structure can also comprise the 6th point of groove 116.The two ends of the 6th point of groove 116 are connected near the one end in the axle center of rotor core 100 near the one end in the axle center of rotor core 100 and the 5th point of groove 115 with the 4th point of groove 114 respectively.
In each embodiment above-mentioned, the span of the first angle α can be: 10 °≤α≤(180/2p) °, wherein p is the number of pole-pairs of the utility model rotor.The span of the first angle α is arranged in above-mentioned scope, can the obvious demagnetization magnetic potential of weakening effect on the first permanent magnet 210 and the 3rd permanent magnet 230 direction of magnetization, and then reduce more demagnetization area that the first permanent magnet 210 and the 3rd permanent magnet 230 demagnetize, improve the anti-demagnetization capability of rotor.
Above-mentioned rotor, comprise rotor core 100 and multiple set of permanent magnets 200, the permanent magnet trough 110 be circumferentially evenly provided with for placing set of permanent magnets 200 of rotor core 100 inside, the normal being arranged on the side of the direction of magnetization of the end permanent magnet at the two ends of permanent magnet trough 110 and the close magnetic flux path 300 of this end permanent magnet of each set of permanent magnets 200 has the first angle α, thus make to cause the magnetic potential of this end permanent magnet demagnetization to be only the one-component of demagnetizing field magnetic potential, improve the anti-demagnetization capability of rotor.
In addition, the utility model also proposes a kind of motor, comprises above-mentioned rotor, and has all advantages that above-mentioned rotor has.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (11)
1. a rotor, comprises rotor core (100) and multiple set of permanent magnets (200), it is characterized in that,
In the inside of described rotor core (100) with the axle center of described rotor core (100) be the center of circle be circumferentially evenly provided with multiple permanent magnet trough (110), and the quantity of described permanent magnet trough (110) is identical with the quantity of described set of permanent magnets (200);
A described set of permanent magnets (200) is arranged in a described permanent magnet trough (110), each described set of permanent magnets (200) comprises the end permanent magnet of the box-shaped structure at the two ends being arranged on corresponding described permanent magnet trough (110), and has the first angle α between the normal of the side of magnetic flux path (300) on the close described rotor core (100) of the direction of magnetization of described end permanent magnet and described end permanent magnet.
2. rotor according to claim 1, it is characterized in that, described end permanent magnet is inclined in described permanent magnet trough (110), and described end permanent magnet has the second angle β near the side of described magnetic flux path (300) and described permanent magnet trough (110) between the sidewall of described magnetic flux path (300).
3. rotor according to claim 2, is characterized in that, the span of described second angle β is: 3 °≤β≤(120/6p) °;
Wherein, p is the number of pole-pairs of described rotor.
4. rotor according to claim 1, it is characterized in that, described permanent magnet trough (110) is U-shaped structure, described permanent magnet trough (110) comprises the first point of groove (111) arranged successively, second point of groove (112) and the 3rd point of groove (113), and the structure of described first point of groove (111) is identical with the structure of described 3rd point of groove (113);
The 3rd permanent magnet (230) that described set of permanent magnets (200) comprises the first permanent magnet (210) be arranged in described first point of groove (111), is arranged on the second permanent magnet (220) in described second point of groove (112) and is arranged in described 3rd point of groove (113);
Described first permanent magnet (210) and described 3rd permanent magnet (230) are end permanent magnet.
5. rotor according to claim 4, it is characterized in that, described first point of groove (111) and described 3rd point of groove (113) are D type structure, and the second arc structure part (113a) of the first arc structure part (111a) of described first point of groove (111) and described 3rd point of groove (113) is all towards described magnetic flux path (300).
6. rotor according to claim 5, it is characterized in that, the arc top of the first arc structure part (111a) of described first point of groove (111) to described first arc structure part (111a) two boundary end points between the vertical range of line that forms be the first length m, the distance between adjacent two described permanent magnet trough (110) is the second length n;
Following relation is met: 0.6<m/n<1.2 between described first length m and described second length n.
7. rotor according to claim 4, it is characterized in that, the second segmentation (111c) that described first point of groove (111) comprises the first segmentation (111d) near the axle center of described rotor core (100) and be connected with described first segmentation (111d);
Described first segmentation (111d) is square structure, width on the direction radial perpendicular to described rotor core (100) of described second segmentation (111c) becomes large along the radial direction of described rotor core (100) gradually towards the direction outside circle, and described first segmentation (111d) away from the sidewall of described magnetic flux path (300) and described second segmentation (111c) in the same plane away from the sidewall of described magnetic flux path (300).
8. rotor according to claim 1, it is characterized in that, described permanent magnet trough (110) is V-structure, described permanent magnet trough (110) comprises the 4th point of groove (114) and the 5th point of groove (115), and described set of permanent magnets (200) comprises the 4th permanent magnet (240) be arranged in described 4th point of groove (114) and the 5th permanent magnet (250) be arranged in described 5th point of groove (115).
9. rotor according to claim 8, it is characterized in that, described permanent magnet trough (110) also comprises the 6th point of groove (116), and the two ends of described 6th point of groove (116) are connected near the one end in described rotor core (100) axle center and the one end in close described rotor core (100) axle center of described 5th point of groove (115) with described 4th point of groove (114) respectively.
10. the rotor according to claim 1 to 9 any one, is characterized in that, the span of described first angle α is: 10 °≤α≤(180/2p) °;
Wherein, p is the number of pole-pairs of described rotor.
11. 1 kinds of motors, is characterized in that, comprise the rotor described in claim 1 to 10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388336.XU CN204669115U (en) | 2015-06-08 | 2015-06-08 | Rotor and there is its motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388336.XU CN204669115U (en) | 2015-06-08 | 2015-06-08 | Rotor and there is its motor |
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| Publication Number | Publication Date |
|---|---|
| CN204669115U true CN204669115U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520388336.XU Expired - Fee Related CN204669115U (en) | 2015-06-08 | 2015-06-08 | Rotor and there is its motor |
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| Country | Link |
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| CN (1) | CN204669115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300730A (en) * | 2015-06-08 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and there is its motor |
| CN106877537A (en) * | 2015-12-08 | 2017-06-20 | 罗伯特·博世有限公司 | For the rotor arrangement of the motor of permanent-magnet-field |
-
2015
- 2015-06-08 CN CN201520388336.XU patent/CN204669115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300730A (en) * | 2015-06-08 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and there is its motor |
| CN106300730B (en) * | 2015-06-08 | 2019-01-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor with it |
| CN106877537A (en) * | 2015-12-08 | 2017-06-20 | 罗伯特·博世有限公司 | For the rotor arrangement of the motor of permanent-magnet-field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20210608 |